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/*
* Copyright © 2016 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <sys/mman.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <errno.h>
#include "igt_vgem.h"
#include "igt_core.h"
#include "ioctl_wrappers.h"
/**
* SECTION:igt_vgem
* @short_description: VGEM support library
* @title: VGEM
* @include: igt.h
*
* This library provides various auxiliary helper functions for writing VGEM
* tests. VGEM is especially useful as a virtual dma-buf import and exporter and
* for testing cross driver synchronization (either using epxlicit dma-fences or
* using implicit fences attached to dma-bufs).
*/
int __vgem_create(int fd, struct vgem_bo *bo)
{
struct drm_mode_create_dumb arg;
memset(&arg, 0, sizeof(arg));
arg.width = bo->width;
arg.height = bo->height;
arg.bpp = bo->bpp;
if (drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg))
return -errno;
bo->handle = arg.handle;
bo->pitch = arg.pitch;
bo->size = arg.size;
return 0;
}
void vgem_create(int fd, struct vgem_bo *bo)
{
igt_assert_eq(__vgem_create(fd, bo), 0);
}
void *__vgem_mmap(int fd, struct vgem_bo *bo, unsigned prot)
{
struct drm_mode_map_dumb arg;
void *ptr;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->handle;
if (drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg))
return NULL;
ptr = mmap(0, bo->size, prot, MAP_SHARED, fd, arg.offset);
if (ptr == MAP_FAILED)
return NULL;
return ptr;
}
void *vgem_mmap(int fd, struct vgem_bo *bo, unsigned prot)
{
void *ptr;
igt_assert_f((ptr = __vgem_mmap(fd, bo, prot)),
"vgem_map(fd=%d, bo->handle=%d, prot=%x)\n",
fd, bo->handle, prot);
return ptr;
}
bool vgem_has_fences(int fd)
{
struct drm_vgem_fence_signal arg;
int err;
err = 0;
memset(&arg, 0, sizeof(arg));
if (drmIoctl(fd, DRM_IOCTL_VGEM_FENCE_SIGNAL, &arg))
err = -errno;
errno = 0;
return err == -ENOENT;
}
static int __vgem_fence_attach(int fd, struct drm_vgem_fence_attach *arg)
{
int err = 0;
if (igt_ioctl(fd, DRM_IOCTL_VGEM_FENCE_ATTACH, arg))
err = -errno;
errno = 0;
return err;
}
bool vgem_fence_has_flag(int fd, unsigned flags)
{
struct drm_vgem_fence_attach arg;
struct vgem_bo bo;
bool ret = false;
memset(&bo, 0, sizeof(bo));
bo.width = 1;
bo.height = 1;
bo.bpp = 32;
vgem_create(fd, &bo);
memset(&arg, 0, sizeof(arg));
arg.handle = bo.handle;
arg.flags = flags;
if (__vgem_fence_attach(fd, &arg) == 0) {
vgem_fence_signal(fd, arg.out_fence);
ret = true;
}
gem_close(fd, bo.handle);
return ret;
}
uint32_t vgem_fence_attach(int fd, struct vgem_bo *bo, unsigned flags)
{
struct drm_vgem_fence_attach arg;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->handle;
arg.flags = flags;
igt_assert_eq(__vgem_fence_attach(fd, &arg), 0);
return arg.out_fence;
}
static int ioctl_vgem_fence_signal(int fd, struct drm_vgem_fence_signal *arg)
{
int err = 0;
if (igt_ioctl(fd, DRM_IOCTL_VGEM_FENCE_SIGNAL, arg))
err = -errno;
errno = 0;
return err;
}
int __vgem_fence_signal(int fd, uint32_t fence)
{
struct drm_vgem_fence_signal arg;
memset(&arg, 0, sizeof(arg));
arg.fence = fence;
return ioctl_vgem_fence_signal(fd, &arg);
}
void vgem_fence_signal(int fd, uint32_t fence)
{
igt_assert_eq(__vgem_fence_signal(fd, fence), 0);
}
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